(a) Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not?(b) How would you prepare a saturated solution of sodium chloride in water at 25°C ? What will happen if this solution is cooled to 10°C?

Saturated SolutionUnsaturated Solution

A saturated solution is one that does not allow the dissolution of additional solutes at a specific temperature.

An unsaturated solution is one that allows the dissolution of additional solutes at the same temperature.

A saturated solution does not dissolve additional solutes or crystals in it. Therefore, the crystal keeps its size when it is put in a saturated solution.

On cooling the solutions, the saturated solution will first form crystals.

If a crystal dissolves in a solution, the solution is said to be unsaturated. This is because an unsaturated solution is capable of dissolving additional solutes into it.

(b) To prepare a saturated solution, dissolve sodium chloride (NaCl) in water at room temperature, till the water can no longer dissolve any more salt. By doing so, we will obtain a saturated solution of sodium chloride.
If the temperature is cooled to 10°C, some of its dissolved solutes will get separated in the form of solute crystals due to the decrease in solubility of the solute.


Simply Easy Learning

Updated on: 10-Oct-2022


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